/**
 * Copyright 2007-2009 Vidar Svansson
 *
 * This file is part of JAdapter.
 *
 * JAdapter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JAdapter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JAdapter.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jadapter.adapters;

import org.jadapter.Adapter;
import org.jadapter.Transformer;

import java.lang.reflect.Type;
import java.lang.reflect.ParameterizedType;

/**
 * Wrapper around {@link org.jadapter.Transformer}.
 * @author Vidar Svansson
 * @since 0.4
 */
public class TransformerAdapter<T,F> implements Adapter<T,F> {

    private Transformer<T,F> transformer;
    private Type from;
    private Type to;

    public TransformerAdapter(Transformer<T,F> transformer, Class<T> to, Class<F> from){
        this.transformer = transformer;
        this.from = from;
        this.to = to;
    }

    public TransformerAdapter(Transformer<T,F> transformer){
        Type[] types = ((ParameterizedType)this.getClass().getGenericSuperclass()).getActualTypeArguments();

        this.to = types[0];
        this.from = types[1];

        this.transformer = transformer;

    }

    public Type from() {
        return from;       
    }

    public Type to() {
        return to;
    }

    public T transform(F context) {
        return transformer.transform(context);
    }
}
